/*************************************************************************** Mustache Boy (c)1987 March Electronics ***************************************************************************/ #include "emu.h" #include "includes/mustache.h" PALETTE_INIT(mustache) { int i; for (i = 0;i < 256;i++) { int bit0,bit1,bit2,bit3,r,g,b; /* red component */ bit0 = (color_prom[i] >> 0) & 0x01; bit1 = (color_prom[i] >> 1) & 0x01; bit2 = (color_prom[i] >> 2) & 0x01; bit3 = (color_prom[i] >> 3) & 0x01; r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; /* green component */ bit0 = (color_prom[i + 256] >> 0) & 0x01; bit1 = (color_prom[i + 256] >> 1) & 0x01; bit2 = (color_prom[i + 256] >> 2) & 0x01; bit3 = (color_prom[i + 256] >> 3) & 0x01; g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; /* blue component */ bit0 = (color_prom[i + 512] >> 0) & 0x01; bit1 = (color_prom[i + 512] >> 1) & 0x01; bit2 = (color_prom[i + 512] >> 2) & 0x01; bit3 = (color_prom[i + 512] >> 3) & 0x01; b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; palette_set_color(machine,i,MAKE_RGB(r,g,b)); } } WRITE8_HANDLER( mustache_videoram_w ) { mustache_state *state = space->machine().driver_data(); UINT8 *videoram = state->m_videoram; videoram[offset] = data; tilemap_mark_tile_dirty(state->m_bg_tilemap, offset / 2); } WRITE8_HANDLER (mustache_video_control_w) { mustache_state *state = space->machine().driver_data(); if (flip_screen_get(space->machine()) != (data & 0x01)) { flip_screen_set(space->machine(), data & 0x01); tilemap_mark_all_tiles_dirty_all(space->machine()); } /* tile bank */ if ((state->m_control_byte ^ data) & 0x08) { state->m_control_byte = data; tilemap_mark_all_tiles_dirty_all(space->machine()); } } WRITE8_HANDLER( mustache_scroll_w ) { mustache_state *state = space->machine().driver_data(); tilemap_set_scrollx(state->m_bg_tilemap, 0, 0x100 - data); tilemap_set_scrollx(state->m_bg_tilemap, 1, 0x100 - data); tilemap_set_scrollx(state->m_bg_tilemap, 2, 0x100 - data); tilemap_set_scrollx(state->m_bg_tilemap, 3, 0x100); } static TILE_GET_INFO( get_bg_tile_info ) { mustache_state *state = machine.driver_data(); UINT8 *videoram = state->m_videoram; int attr = videoram[2 * tile_index + 1]; int code = videoram[2 * tile_index] + ((attr & 0x60) << 3) + ((state->m_control_byte & 0x08) << 7); int color = attr & 0x0f; SET_TILE_INFO(0, code, color, ((attr & 0x10) ? TILE_FLIPX : 0) | ((attr & 0x80) ? TILE_FLIPY : 0) ); } VIDEO_START( mustache ) { mustache_state *state = machine.driver_data(); state->m_bg_tilemap = tilemap_create(machine, get_bg_tile_info, tilemap_scan_rows_flip_x, 8, 8, 64, 32); tilemap_set_scroll_rows(state->m_bg_tilemap, 4); } static void draw_sprites(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect ) { mustache_state *state = machine.driver_data(); rectangle clip = *cliprect; const gfx_element *gfx = machine.gfx[1]; const rectangle &visarea = machine.primary_screen->visible_area(); UINT8 *spriteram = state->m_spriteram; int offs; for (offs = 0;offs < state->m_spriteram_size;offs += 4) { int sy = 240-spriteram[offs]; int sx = 240-spriteram[offs+3]; int code = spriteram[offs+2]; int attr = spriteram[offs+1]; int color = (attr & 0xe0)>>5; if (sy == 240) continue; code+=(attr&0x0c)<<6; if ((state->m_control_byte & 0xa)) clip.max_y = visarea.max_y; else if (flip_screen_get(machine)) clip.min_y = visarea.min_y + 56; else clip.max_y = visarea.max_y - 56; if (flip_screen_get(machine)) { sx = 240 - sx; sy = 240 - sy; } drawgfx_transpen(bitmap,&clip,gfx, code, color, flip_screen_get(machine),flip_screen_get(machine), sx,sy,0); } } SCREEN_UPDATE( mustache ) { mustache_state *state = screen->machine().driver_data(); tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0); draw_sprites(screen->machine(), bitmap, cliprect); return 0; }